在摄影中起主要作用的是（）。A、最短波长B、最长波长C、最强波长D、平均波长E、连续

新民主主义革命时期国民党、 * * 党曾两度合作。这两次合作的目的分别是为了（   ）

A．推翻清朝统治建立中华人民共和国

B．反帝反封建抗击日本侵略

C．建立中华民国反帝反封建

D．抗击日本侵略完成祖国统一

水体污染越来越严重，怎样防止水体污染呢？（3分）

.

第二部分（共5小题；每小题2分，满分10分）

根据短文内容，从短文后所给的A、B、C、D、E、F、G选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。

The cost of medical care in the United States is very high. The time and money that doctors spend on their medical education are probably one reason for this problem.   71   ， so some people think it is impossible to pay for the medical care.   72  . Most doctors, however, disagree. They say that they were required to study medicine for a long time. Tuition（学费）for many years of medical education costs a lot of money. Doctors say that most medical students had to borrow money from a bank to pay their tuition.­­­­­­­­   73  , young doctors need a lot of money for their work.   74  . Because high tuition is one cause of high costs,   75  .

A.It is possible for the poor people to see the doctor in America

B.Many people in the United States think that doctors are overpaid

C.One way to lower costs would be to have medical schools that are free or have low tuition

D.They are not willing to pay high tuition for the doctors

E.A visit to a doctor’s office costs from fifteen to fifty dollars

F.Because this money must be repaid to the bank

G.So, they charge people high prices for medical care

中暑患者中最严重者为

A．热痉挛

B．热衰竭

C．热射病

D．儿童中暑

E．老年人中暑

新型互联网服务工具不包括以下哪个？（）

A.微博客服

B.微信客服

C.E-mail客服

D.电话客服